package com.stack;



/**
 * 编辑器中括号匹配问题
 */
public class Test {
    public static boolean isValid(String s){
//        Stack<Character> stack = new Stack<>();
        Stack<Character> stack = new LinkedStack<>();
        for(int i = 0; i < s.length(); i++){
            char c = s.charAt(i);
            if(c == '(' || c == '[' || c == '{')
                stack.push(c);
            else{
                if(stack.isEmpty())
                    return false;

                char topChar = stack.pop();
                if(c == ')' && topChar != '(')
                    return false;
                if(c == ']' && topChar != '[')
                    return false;
                if(c == '}' && topChar != '{')
                    return false;
            }
        }
        return stack.isEmpty();
    }

    public static void main(String [] args){
        System.out.println(isValid("{[([])]}"));
        System.out.println(isValid("{[(}]}"));
    }
}
